D2845(室内波速测试).pdf

Designation: D 2845 – 951 AMERICAN SOCIETY FOR TESTING AND MATERIALS 100 Barr Harbor Dr., West Conshohocken, PA 19428 Reprinted from the Annual Book of ASTM Standards. Copyright ASTM Standard Test Method for Laboratory Determination of Pulse Velocities and Ultrasonic Elastic Constants of Rock1 This standard is issued under the fixed designation D 2845; the number immediately following the designation indicates the year of original adoption or, in the case of revision, the year of last revision. A number in parentheses indicates the year of last reapproval. A superscript epsilon () indicates an editorial change since the last revision or reapproval. 1 NOTE—Paragraph 10.5 was added editorially in January 1997. 1. Scope 3. Summary of Test Method 1.1 This test method describes equipment and procedures 3.1 Details of essential procedures for the determination of for laboratory measurements of the pulse velocities of com- the ultrasonic velocity, measured in terms of travel time and pression waves and shear waves in rock (1)2 (Note 1) and the distance, of compression and shear waves in rock specimens determination of ultrasonic elastic constants (Note 2) of an include requirements of instrumentation, suggested types of isotropic rock or one exhibiting slight anisotropy. transducers, methods of preparation, and effects of specimen geometr